Furnace air-feeding mechanism.



PATBNTED SEPT. 10,1907.

W. E. oo LB. FURNAGB AIR PBEDINGv MEGHANISM.

APPLICATION FILED JULY 19, 1906.

` volving the features of the invention.

UNITED PATENT OFFICE.

WILLIA EA COLE, Ol" NORFOLK, VIRGINIA.

FURNACE AIR-FEEDING MEOHANISM.

Specication of Letters Patent.

Patented Sept. 10, 1907.

Application tiled July 19,1906. Serial No. 327,109.

practically closed by the dctlecting filler 23. Said tiller can be of solid core or a tube closed at the top or bottom as is indicated by the bottom ot' the filler 23 in Fig. :t narrow flange :24 is made onto the top of the deducting liller 23 to rest on the points of the projecting Mechanism; and I do hereby declare the following to be a full, clear, and exact discription of the invention,

such as will enable others skilled in the art to which it l between the flange 24 and the inner surface of the appertaxins to make and use the sante.

The object. of the invention is to supply highly lie-ated air tu the products ot' combustion rising in the tlame from the burnin,Y fuel; the means for heating the air bengof a eonstructitm anda capacity that will produce the dired result.

A further object is to produce an air heater that (un of boiler furnace that has' a bridge. wall at the rear end Q of the fuel grati-s.

Figure l is a longitudinal, vertical section taken through a water tube boiler furnace inelosurc, proided with an air feeding and snperhtating mechanism in- Fg. ZZ is an enlarged detail view of a fragment of the heating mechanism detached parts being seen in elevation and parts in vertieal sections. Fig. 3 is a veztic-.tljectiun taken on the platte. of line 6-6 of Fig. 2, Fig. 4 is a transpin: 22 thereby suspending and holding the filler in position, or it may be held in position in any other suitable manner, at. the saine time ample space neing left heater 2l for the [masage of the air.

To the top of the body oi the heater 21 is bolted or otherwise secured a. mp 25. en top of which is arranged an injector lt), said injector having,7 a steam pipe connection 1T willi the steam dome of the boiler.

I7 is a valve to regulate the supply of steam t0 thc injector 1G. The nozzle of the injector 16 reaches into an aperture 2S in the bridge wall.

In Fig. 1 the furnace 25 is indicated as being equipped with a ure' nur. M4tolter of the Rooney type.

As thc gri-cu that in fed from the hopper 3l into the furnace 26, hiltit is cokng the smoke and gases are rising therefrom. The arch 29 is to force said gases toward the flame but they only come in contact. with one edge of the llame and the distance is so short from the arch up to the boiler tubes that a very large ationnt.

f ot' the products of mnibustiou escapes unconsumed.

verse section iaiten on the platte indicated by line T-T t valve l turn steam nuo the injector lo and, 1t will f rig, 3.

It. is well known te those familiar with the burnin;r i

of bituminous cual that when the tire i` freshly stoked r In Fig. l l have illustrated thc mechanical manner I in which the invention is installed in the rear of the bridge wall 20 in the combustion chamber '.T which is inclus-d within the boiler inclosure walls I8. I The air supply inlet pipe l!) leading.: from the outside into the inclosnre is preferably run tntnsversely across the combustion chamber 2T in close touch will. the bridge wall 20 though the air supply inlet. pipe lf* mn be mndiled to receive air funn below thruugh the loundation floor of thtl boiler, or from any other diret ti.n m that it reaches the bottoni of the main body of tlu air louter 2l, said heater being supplied with a horizontal liaugc adapted to be bolted or otherwise removably .w-cnnd to ilu-nir inlet pipe 15|.

The Inn-dy pnrtiqn of the heater 2l has iutegndly nut in a staggered relation.

v center umiundetl by the projecting plus 22 and Directions to operate the invention: With the steam draw air into the inlet pipi-'I9 to the heater 21, then the detlectint: tiller 3 forces the air to paw upward among and ilnpinge around the projet-ting ping 22, thereby causing the air to be so intensely heated by the time it reachesthe injector lli and is forced through aperture .S intetbc [urn-ace 2b' that instantaneous cotnlinstinn is thcrcsuit. lt isalso observable that when thcheatcd air is forced into the furnace and consequently into and through the thune. that it eues under the arch 20, carrying.: a portion ot' thi llanuwith it, thcu the gases rising front the coking fuel coxnmingles with the intensely lit-ated air and all the gaswus products of conibnction are ignited before they come from underthc arch; then the boiler gets the l'ull henctit ot' every unit ot' hunt that the coal can produce.

The invention is adapted to any boiler settingr so loln.' as there is a bridge wall with a space or combustion chamber in the .'.ear of it. i

lu return tlu` boiler furnaces, as the flame is drawn toward the bridge wall the heated air is forced into the llame ncar the fuel und the coal gases are ignited before they leave the furnace and fully consumed lufl'ore they enter the return flute. t

Having dweribcd my invention, l now desire to secure by Lettun Patent the ltdlowing claimen-f t. In u furnace air feeding mechanism. the cotnhlnntlnn with n furnace lncluenrc. of :r furnace ha ring vn brldge walt at its renr end, au nir supply plpeh the renr of slid bridge wail. an oxygen heater connected to said pipe. a plurality of projecting pins on the inner surface of said `heater. und ii-nvlng n central opening. a detieeting iiiier extendini: in said opening, un injector connected to snld ,heater n'iti. means for delivering tile nir therefrom to the products of combustion rising from the furnace tire.

in its rear lenel, ln air supply pipe extending into the inclosure in the rear of the bridge wall, an nir heater attached to slid supply pipe, projecting pin on the inner surface of said heater. leaving n longitudinal opening therein, n deiiecting tilier removably positioned within said longitudinal space, a removnble cap for said nir heater, nn injector, with steam pipe connection, to draw air into the supply pipe, and through the said heater and force it thmugh the opening in the bridge wail into said furnace.

in testimony whereof I unix my signature in presence of tur:- witnesses.

WILLIAM E. COLE.

Witnesses z Jeux L. FLmcsi-'x, Emmi: M. iin-cuis. 

